Lasting-jack



(No Model.)

'G. W. WILLEY.

Lasting Jack.

N0. 233;177. Iiy. [Patented Oct. 12,1880.

UNITED STATES PATENT FFICE.

GEORGE W. WILLEY, OF ATHOL, MASSACHUSETTS.

LASTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 233,177, dated October12, 1880.

Application filed June 7, 1880. (No model.)

To all whom it may concern Be it known that I, GEORGE W. WILLEY, ofAthol, of the county of Worcester and State of Massachusetts, haveinvented a new and useful Improvement in Lasting-Jacks; and I do herebydeclare the same to be described in the following specification andrepresented in the accompanying drawings, of which- Figure l is a sideview, and Fig. 2 a vertical and longitudinal section, of a jack asimproved by me, the nature of my invention be ing duly set forth in theclaims hereinafter presented. Fig. 3 is a side view of the jackjournalwith its clamp-screw and the stud thereto. Fig. 4 is a top view of thenotched annulus or collar, to be hereinafter described.

In such drawings, A denotes a lasting-jack as commonly constructed, itbeing provided with a tapering journal, to, to enter and turn in acorresponding bearing, b, made in an orbital arm, B. Beneath the saidbearing there is in the said orbital arm a cylindrical chamber, 0, openat bottom, and opening into the bearing by a circular aperture, d, downthrough which a clamp-screw, 6, passes. This clampscrew has extendingfrom its shank a stud, f, there being a notch, g, in the bottom of thebearing, and opening into the aperture (1, to allow of the stud beingmoved with the screw a short distance into the chamber 0, or, in otherwords, into a notch, h, made as shown in Figs. 2 and 4, in a metalliccollar or washer, i, arranged in they upper part of the chamber 0, andencircling the shank of the screw. This collar I prefer to maketapering, as shown in section at k in Fig. 2, and to have the taperingpart bear against a counter-tapered bearing, 6, at the top of thechamber. A short helical spring, m, is arranged in the chamber 0,encompassing the screw, upon Whose threaded part is screwed a nut, G, tobear against the spring and force itup to the collar. By reason of thestud entering the notch of the collar it will be seen that on revolvingthe jack the collar will be caused to turn with it and in the chamber 0,the spring and nut also revolving with the collar. Were it not for thestud and the notched collar and the springbore directly against the topof the chamber, the nut would be liable to be either unscrewed from thescrew or set up too far thereon in case of the jack being revolved; butthe notched collar and its actuating-stud operate to prevent suchloosening or tightening of the nut.

The orbital arm B, at its upper end, is provided with ajournal, m, whoseaxis produced is at a right angle with that of the jack-journalproduced. The said journal m turns in a corresponding bearing in theupper part of a standard, D, for supporting the orbital arm, and fixedon the part of the journal that projects beyond the standard is acylinder or head, E, provided on its inner end with a series of radialnotches, n, arranged at equal distances apart around it.

There is suitably adapted to the standard a bolt, F, provided with aspring, G, to force the bolt upward, in order to cause it to entereither of the notches n'when such notch is directly over the bolt, or ina situation to receive it. The bolt is to be provided with a pedal and aproper attachment thereto, to enable an operator while using the jack,and when necessary, to force with his foot the bolt down out of a notch,in order for the orbital arm to be moved more or less in its circle ofrevolution, as circumstances may require, the bolt serving, with one ofthe notches, to hold the arm firmly in position.

The devices for sustaining the jack on the orbital arm enable such jackto be revolved independently of the arm, and with steadiness and more orless friction, as may be required.

I have recently applied for a patent for the combination of a rotarylasting-jack, an orbital curved arm, and a supporting-standard very likewhat is heretofore described; therefore I herein do not claim such,broadly; but

What I do claim as my present invention is as follows:

1. The orbital arm B, provided with the journal-bearing b,spring-chamber c, notch g, and passage d, arranged as described, incombination with the notched collar 2', the spring m, the out 0, and therotary jack A, provided with the journal to, the clamp-screw c, and thestud f, extending from the latter into the notch of the collar, allbeing adapted and to operstandard,and to operatewith abolt,F,adapted atesubstantially as set forth. to the standard, and provided with anactuat- 1o 2. The orbital arm B, applied to the jack ing-spring, G, allbeing as set forth. A, as described, and provided with the taperingjournal m, in combination with the standard D, applied to such journalas shown, and with the notched head E fixed to the journal and arrangedoutside of and against such GEORGE W. WILLEY.

Witnesses:

E. O. \VILSON, J. J. COXETER.

